Home / 258,826.14-388,241.64-81,329.22

Finding the Fourth Proportional to 258,826.14, 388,241.64 and 81,329.22

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Solution

The fourth proportional to 258,826.14, 388,241.64 and 81,329.22 is: 121,994.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,826.14 : 388,241.64 = 81,329.22 : x
  2. Step 2: Convert to fraction form
    258,826.14/388,241.64 = 81,329.22/x
  3. Step 3: Cross multiply
    258,826.14x = 388,241.64 × 81,329.22
  4. Step 4: Simplify right side
    258,826.14x = 31,575,389,752.72
  5. Step 5: Solve for x
    x = 31,575,389,752.72/258,826.14
  6. Step 6: Final answer
    x = 121,994.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.